8ISTJ: They're Making Lists Of Goals And Plans
Someone who is an ISTJ is a "Responsible Realist" and is "dependable" and loves to follow rules and order. When they want out of a relationship, they're going to make lists of goals and plans.
To Absolutely Not)
ISTJs are "careful" and "logical" and people who are used to "managing details." When they're thinking about a breakup, they'll seem to have this new energy and so many ideas for what they want to accomplish. It seems like they would want to create order in their life since once they are ready to tell their partner that the relationship is over, things will get a little bit messy.